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Research

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Publication details for Professor Michael Petty

Jung, GY, Pearson, C, Kilitziraki, M, Horsburgh, LE, Monkman, AP, Samuel, IDW & Petty, MC (2000). Dual-layer light emitting devices based on polymeric Langmuir-Blodgett films. Journal Of Materials Chemistry 10(1): 163-167.
  • Publication type: Journal Article
  • ISSN/ISBN: 0959-9428
  • Keywords: ORGANIC ELECTROLUMINESCENT DIODES; ELECTRON-TRANSPORTING POLYMER; IMPEDANCE SPECTROSCOPY

Author(s) from Durham

Abstract

Poly(2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene) (MEH-PPV) and
poly(6-hexylpyridine-2,5-diyl) (PHPY) Langmuir-Blodgett films have been
used as emitting layer and electron transporting layer, respectively,
in light emitting diodes. The electrical and opto-electrical
characteristics of the dual-layer devices have been compared to single
layer devices based on MEH-PPV. AC impedance measurements over the
frequency range 5 Hz-13 MHz have been used to provide an insight into
the electrical equivalent circuit of the devices. The external quantum
efficiency of the dual-layer structure was found to be approximately
ten times higher than that of the single layer device.